Answer:Race
Explanation:Racism is the most well-known and most common
Answer:
Behavioural contagion.
Explanation:
This is seen to a behavioural or social influence. This is said to give someone the tenacity to copy a behaviour of someone or things that is been vividly seen to be happening in your environment. It is said to be pushed by various factors but reduction of restraint is the predominant factor according to research has been put first of all other factors. This act is sometimes tagged to be spontaneous when it happens by the said individual performing it and sometimes said to imitational. That was why Dave in the above scenario started crying when he saw his fellow mates at a crying state when their parent try to leave the play school.
Economic depression coupled with extended drought, unusually high temperatures, poor agricultural practices and the resulting wind erosion all contributed to making the Dust Bowl.
They tell us that they had an affinity for measuring and keeping track of time which means they probably had some things which they wanted to do periodically. Or at least that they wanted to keep track of when they happened. This also tells us that they were sophisticated enough to develop time tracking, writing and were efficient enough to use all of them continuously.